1187 lines
44 KiB
C
1187 lines
44 KiB
C
/*
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* @Copyright : (C) 2022 Phytium Information Technology, Inc.
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* All Rights Reserved.
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*
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* This program is OPEN SOURCE software: you can redistribute it and/or modify it
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* under the terms of the Phytium Public License as published by the Phytium Technology Co.,Ltd,
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* either version 1.0 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the Phytium Public License for more details.
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*
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*
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* @FilePath: felf.c
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* @Date: 2023-05-25 19:27:49
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* @LastEditTime: 2023-06-05 14:11:48
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* Description: This file is for providing elf functions.
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*
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* Modify History:
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* Ver Who Date Changes
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* ----- ------ -------- --------------------------------------
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* 1.0 zhugengyu 2022/10/27 rename file name
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* 1.1 huanghe 2023/06/05 add get section information
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*/
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#include <string.h>
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#include "fkernel.h"
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#include "felf.h"
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#include "fcache.h"
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#include "fdebug.h"
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#include "fprintk.h"
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/* This version doesn't work for 64-bit ABIs - Erik */
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/* These typedefs need to be handled better */
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typedef u32 Elf32_Addr; /* Unsigned program address */
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typedef u32 Elf32_Off; /* Unsigned file offset */
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typedef s32 Elf32_Sword; /* Signed large integer */
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typedef u32 Elf32_Word; /* Unsigned large integer */
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typedef u16 Elf32_Half; /* Unsigned medium integer */
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/* 64-bit ELF base types */
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typedef u64 Elf64_Addr;
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typedef u16 Elf64_Half;
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typedef s16 Elf64_SHalf;
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typedef u64 Elf64_Off;
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typedef s32 Elf64_Sword;
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typedef u32 Elf64_Word;
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typedef u64 Elf64_Xword;
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typedef s64 Elf64_Sxword;
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/* e_ident[] identification indexes */
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#define EI_MAG0 0 /* file ID */
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#define EI_MAG1 1 /* file ID */
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#define EI_MAG2 2 /* file ID */
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#define EI_MAG3 3 /* file ID */
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#define EI_CLASS 4 /* file class */
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#define EI_DATA 5 /* data encoding */
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#define EI_VERSION 6 /* ELF header version */
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#define EI_OSABI 7 /* OS/ABI specific ELF extensions */
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#define EI_ABIVERSION 8 /* ABI target version */
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#define EI_PAD 9 /* start of pad bytes */
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#define EI_NIDENT 16 /* Size of e_ident[] */
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/* ELF Header */
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typedef struct
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{
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unsigned char e_ident[EI_NIDENT]; /* ELF Identification */
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Elf32_Half e_type; /* object file type */
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Elf32_Half e_machine; /* machine */
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Elf32_Word e_version; /* object file version */
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Elf32_Addr e_entry; /* virtual entry point */
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Elf32_Off e_phoff; /* program header table offset */
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Elf32_Off e_shoff; /* section header table offset */
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Elf32_Word e_flags; /* processor-specific flags */
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Elf32_Half e_ehsize; /* ELF header size */
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Elf32_Half e_phentsize; /* program header entry size */
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Elf32_Half e_phnum; /* number of program header entries */
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Elf32_Half e_shentsize; /* section header entry size */
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Elf32_Half e_shnum; /* number of section header entries */
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Elf32_Half e_shstrndx; /* section header table's "section
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header string table" entry offset */
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} Elf32_Ehdr;
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typedef struct
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{
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unsigned char e_ident[EI_NIDENT]; /* ELF Identification */
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Elf64_Half e_type; /* object file type */
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Elf64_Half e_machine; /* machine */
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Elf64_Word e_version; /* object file version */
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Elf64_Addr e_entry; /* virtual entry point */
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Elf64_Off e_phoff; /* program header table offset */
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Elf64_Off e_shoff; /* section header table offset */
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Elf64_Word e_flags; /* processor-specific flags */
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Elf64_Half e_ehsize; /* ELF header size */
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Elf64_Half e_phentsize; /* program header entry size */
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Elf64_Half e_phnum; /* number of program header entries */
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Elf64_Half e_shentsize; /* section header entry size */
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Elf64_Half e_shnum; /* number of section header entries */
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Elf64_Half e_shstrndx; /* section header table's "section
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header string table" entry offset */
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} Elf64_Ehdr;
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/* Section Header */
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typedef struct
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{
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Elf32_Word sh_name; /* name - index into section header
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string table section */
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Elf32_Word sh_type; /* type */
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Elf32_Word sh_flags; /* flags */
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Elf32_Addr sh_addr; /* address */
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Elf32_Off sh_offset; /* file offset */
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Elf32_Word sh_size; /* section size */
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Elf32_Word sh_link; /* section header table index link */
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Elf32_Word sh_info; /* extra information */
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Elf32_Word sh_addralign; /* address alignment */
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Elf32_Word sh_entsize; /* section entry size */
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} Elf32_Shdr;
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typedef struct
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{
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Elf64_Word sh_name; /* name - index into section header
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string table section */
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Elf64_Word sh_type; /* type */
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Elf64_Xword sh_flags; /* flags */
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Elf64_Addr sh_addr; /* address */
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Elf64_Off sh_offset; /* file offset */
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Elf64_Xword sh_size; /* section size */
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Elf64_Word sh_link; /* section header table index link */
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Elf64_Word sh_info; /* extra information */
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Elf64_Xword sh_addralign; /* address alignment */
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Elf64_Xword sh_entsize; /* section entry size */
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} Elf64_Shdr;
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/* Symbol Table Entry */
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typedef struct
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{
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Elf32_Word st_name; /* name - index into string table */
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Elf32_Addr st_value; /* symbol value */
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Elf32_Word st_size; /* symbol size */
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unsigned char st_info; /* type and binding */
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unsigned char st_other; /* 0 - no defined meaning */
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Elf32_Half st_shndx; /* section header index */
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} Elf32_Sym;
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/* Relocation entry with implicit addend */
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typedef struct
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{
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Elf32_Addr r_offset; /* offset of relocation */
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Elf32_Word r_info; /* symbol table index and type */
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} Elf32_Rel;
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/* Relocation entry with explicit addend */
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typedef struct
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{
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Elf32_Addr r_offset; /* offset of relocation */
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Elf32_Word r_info; /* symbol table index and type */
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Elf32_Sword r_addend;
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} Elf32_Rela;
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typedef struct
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{
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Elf64_Addr r_offset; /* Location at which to apply the action */
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Elf64_Xword r_info; /* index and type of relocation */
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} Elf64_Rel;
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typedef struct
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{
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Elf64_Addr r_offset; /* Location at which to apply the action */
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Elf64_Xword r_info; /* index and type of relocation */
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Elf64_Sxword r_addend; /* Constant addend used to compute value */
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} Elf64_Rela;
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/* Program Header */
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typedef struct
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{
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Elf32_Word p_type; /* segment type */
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Elf32_Off p_offset; /* segment offset */
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Elf32_Addr p_vaddr; /* virtual address of segment */
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Elf32_Addr p_paddr; /* physical address of segment */
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Elf32_Word p_filesz; /* number of bytes in file for seg */
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Elf32_Word p_memsz; /* number of bytes in mem. for seg */
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Elf32_Word p_flags; /* flags */
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Elf32_Word p_align; /* memory alignment */
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} Elf32_Phdr;
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typedef struct
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{
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Elf64_Word p_type; /* segment type */
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Elf64_Word p_flags; /* flags */
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Elf64_Off p_offset; /* segment offset */
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Elf64_Addr p_vaddr; /* virtual address of segment */
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Elf64_Addr p_paddr; /* physical address of segment */
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Elf64_Xword p_filesz; /* number of bytes in file for seg */
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Elf64_Xword p_memsz; /* number of bytes in mem. for seg */
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Elf64_Xword p_align; /* memory alignment */
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} Elf64_Phdr;
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/* Dynamic structure */
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typedef struct
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{
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Elf32_Sword d_tag; /* controls meaning of d_val */
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union
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{
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Elf32_Word d_val; /* Multiple meanings - see d_tag */
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Elf32_Addr d_ptr; /* program virtual address */
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} d_un;
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} Elf32_Dyn;
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extern Elf32_Dyn _DYNAMIC[];
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typedef struct
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{
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Elf64_Sxword d_tag; /* entry tag value */
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union
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{
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Elf64_Xword d_val;
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Elf64_Addr d_ptr;
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} d_un;
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} Elf64_Dyn;
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/* e_ident[] magic number */
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#define ELFMAG0 0x7f /* e_ident[EI_MAG0] */
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#define ELFMAG1 'E' /* e_ident[EI_MAG1] */
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#define ELFMAG2 'L' /* e_ident[EI_MAG2] */
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#define ELFMAG3 'F' /* e_ident[EI_MAG3] */
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#define ELFMAG "\177ELF" /* magic */
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#define SELFMAG 4 /* size of magic */
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/* e_ident[] file class */
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#define ELFCLASSNONE 0 /* invalid */
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#define ELFCLASS32 1 /* 32-bit objs */
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#define ELFCLASS64 2 /* 64-bit objs */
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#define ELFCLASSNUM 3 /* number of classes */
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/* e_ident[] data encoding */
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#define ELFDATANONE 0 /* invalid */
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#define ELFDATA2LSB 1 /* Little-Endian */
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#define ELFDATA2MSB 2 /* Big-Endian */
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#define ELFDATANUM 3 /* number of data encode defines */
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/* e_ident[] OS/ABI specific ELF extensions */
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#define ELFOSABI_NONE 0 /* No extension specified */
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#define ELFOSABI_HPUX 1 /* Hewlett-Packard HP-UX */
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#define ELFOSABI_NETBSD 2 /* NetBSD */
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#define ELFOSABI_LINUX 3 /* Linux */
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#define ELFOSABI_SOLARIS 6 /* Sun Solaris */
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#define ELFOSABI_AIX 7 /* AIX */
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#define ELFOSABI_IRIX 8 /* IRIX */
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#define ELFOSABI_FREEBSD 9 /* FreeBSD */
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#define ELFOSABI_TRU64 10 /* Compaq TRU64 UNIX */
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#define ELFOSABI_MODESTO 11 /* Novell Modesto */
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#define ELFOSABI_OPENBSD 12 /* OpenBSD */
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/* 64-255 Architecture-specific value range */
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/* e_ident[] ABI Version */
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#define ELFABIVERSION 0
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/* e_ident */
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#define IS_ELF(ehdr) ((ehdr).e_ident[EI_MAG0] == ELFMAG0 && \
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(ehdr).e_ident[EI_MAG1] == ELFMAG1 && \
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(ehdr).e_ident[EI_MAG2] == ELFMAG2 && \
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(ehdr).e_ident[EI_MAG3] == ELFMAG3)
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/* e_type */
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#define ET_NONE 0 /* No file type */
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#define ET_REL 1 /* relocatable file */
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#define ET_EXEC 2 /* executable file */
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#define ET_DYN 3 /* shared object file */
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#define ET_CORE 4 /* core file */
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#define ET_NUM 5 /* number of types */
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#define ET_LOOS 0xfe00 /* reserved range for operating */
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#define ET_HIOS 0xfeff /* system specific e_type */
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#define ET_LOPROC 0xff00 /* reserved range for processor */
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#define ET_HIPROC 0xffff /* specific e_type */
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/* e_machine */
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#define EM_NONE 0 /* No Machine */
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#define EM_M32 1 /* AT&T WE 32100 */
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#define EM_SPARC 2 /* SPARC */
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#define EM_386 3 /* Intel 80386 */
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#define EM_68K 4 /* Motorola 68000 */
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#define EM_88K 5 /* Motorola 88000 */
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#if 0
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#define EM_486 6 /* RESERVED - was Intel 80486 */
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#endif
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#define EM_860 7 /* Intel 80860 */
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#define EM_MIPS 8 /* MIPS R3000 Big-Endian only */
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#define EM_S370 9 /* IBM System/370 Processor */
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#define EM_MIPS_RS4_BE 10 /* MIPS R4000 Big-Endian */
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#if 0
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#define EM_SPARC64 11 /* RESERVED - was SPARC v9 \
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64-bit unoffical */
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#endif
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/* RESERVED 11-14 for future use */
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#define EM_PARISC 15 /* HPPA */
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/* RESERVED 16 for future use */
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#define EM_VPP500 17 /* Fujitsu VPP500 */
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#define EM_SPARC32PLUS 18 /* Enhanced instruction set SPARC */
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#define EM_960 19 /* Intel 80960 */
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#define EM_PPC 20 /* PowerPC */
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#define EM_PPC64 21 /* 64-bit PowerPC */
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#define EM_S390 22 /* IBM System/390 Processor */
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/* RESERVED 23-35 for future use */
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#define EM_V800 36 /* NEC V800 */
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#define EM_FR20 37 /* Fujitsu FR20 */
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#define EM_RH32 38 /* TRW RH-32 */
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#define EM_RCE 39 /* Motorola RCE */
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#define EM_ARM 40 /* Advanced Risc Machines ARM */
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#define EM_ALPHA 41 /* Digital Alpha */
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#define EM_SH 42 /* Hitachi SH */
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#define EM_SPARCV9 43 /* SPARC Version 9 */
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#define EM_TRICORE 44 /* Siemens TriCore embedded processor */
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#define EM_ARC 45 /* Argonaut RISC Core */
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#define EM_H8_300 46 /* Hitachi H8/300 */
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#define EM_H8_300H 47 /* Hitachi H8/300H */
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#define EM_H8S 48 /* Hitachi H8S */
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#define EM_H8_500 49 /* Hitachi H8/500 */
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#define EM_IA_64 50 /* Intel Merced */
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#define EM_MIPS_X 51 /* Stanford MIPS-X */
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#define EM_COLDFIRE 52 /* Motorola Coldfire */
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#define EM_68HC12 53 /* Motorola M68HC12 */
|
||
#define EM_MMA 54 /* Fujitsu MMA Multimedia Accelerator*/
|
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#define EM_PCP 55 /* Siemens PCP */
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#define EM_NCPU 56 /* Sony nCPU embeeded RISC */
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#define EM_NDR1 57 /* Denso NDR1 microprocessor */
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#define EM_STARCORE 58 /* Motorola Start*Core processor */
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#define EM_ME16 59 /* Toyota ME16 processor */
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#define EM_ST100 60 /* STMicroelectronic ST100 processor */
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#define EM_TINYJ 61 /* Advanced Logic Corp. Tinyj emb.fam*/
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#define EM_X86_64 62 /* AMD x86-64 */
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#define EM_PDSP 63 /* Sony DSP Processor */
|
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/* RESERVED 64,65 for future use */
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#define EM_FX66 66 /* Siemens FX66 microcontroller */
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#define EM_ST9PLUS 67 /* STMicroelectronics ST9+ 8/16 mc */
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#define EM_ST7 68 /* STmicroelectronics ST7 8 bit mc */
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#define EM_68HC16 69 /* Motorola MC68HC16 microcontroller */
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#define EM_68HC11 70 /* Motorola MC68HC11 microcontroller */
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#define EM_68HC08 71 /* Motorola MC68HC08 microcontroller */
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#define EM_68HC05 72 /* Motorola MC68HC05 microcontroller */
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#define EM_SVX 73 /* Silicon Graphics SVx */
|
||
#define EM_ST19 74 /* STMicroelectronics ST19 8 bit mc */
|
||
#define EM_VAX 75 /* Digital VAX */
|
||
#define EM_CHRIS 76 /* Axis Communications embedded proc. */
|
||
#define EM_JAVELIN 77 /* Infineon Technologies emb. proc. */
|
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#define EM_FIREPATH 78 /* Element 14 64-bit DSP Processor */
|
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#define EM_ZSP 79 /* LSI Logic 16-bit DSP Processor */
|
||
#define EM_MMIX 80 /* Donald Knuth's edu 64-bit proc. */
|
||
#define EM_HUANY 81 /* Harvard University mach-indep objs */
|
||
#define EM_PRISM 82 /* SiTera Prism */
|
||
#define EM_AVR 83 /* Atmel AVR 8-bit microcontroller */
|
||
#define EM_FR30 84 /* Fujitsu FR30 */
|
||
#define EM_D10V 85 /* Mitsubishi DV10V */
|
||
#define EM_D30V 86 /* Mitsubishi DV30V */
|
||
#define EM_V850 87 /* NEC v850 */
|
||
#define EM_M32R 88 /* Mitsubishi M32R */
|
||
#define EM_MN10300 89 /* Matsushita MN10200 */
|
||
#define EM_MN10200 90 /* Matsushita MN10200 */
|
||
#define EM_PJ 91 /* picoJava */
|
||
#define EM_NUM 92 /* number of machine types */
|
||
|
||
/* Version */
|
||
#define EV_NONE 0 /* Invalid */
|
||
#define EV_CURRENT 1 /* Current */
|
||
#define EV_NUM 2 /* number of versions */
|
||
|
||
/* Special Section Indexes */
|
||
#define SHN_UNDEF 0 /* undefined */
|
||
#define SHN_LORESERVE 0xff00 /* lower bounds of reserved indexes */
|
||
#define SHN_LOPROC 0xff00 /* reserved range for processor */
|
||
#define SHN_HIPROC 0xff1f /* specific section indexes */
|
||
#define SHN_LOOS 0xff20 /* reserved range for operating */
|
||
#define SHN_HIOS 0xff3f /* specific semantics */
|
||
#define SHN_ABS 0xfff1 /* absolute value */
|
||
#define SHN_COMMON 0xfff2 /* common symbol */
|
||
#define SHN_XINDEX 0xffff /* Index is an extra table */
|
||
#define SHN_HIRESERVE 0xffff /* upper bounds of reserved indexes */
|
||
|
||
/* sh_type */
|
||
#define SHT_NULL 0 /* inactive */
|
||
#define SHT_PROGBITS 1 /* program defined information */
|
||
#define SHT_SYMTAB 2 /* symbol table section */
|
||
#define SHT_STRTAB 3 /* string table section */
|
||
#define SHT_RELA 4 /* relocation section with addends*/
|
||
#define SHT_HASH 5 /* symbol hash table section */
|
||
#define SHT_DYNAMIC 6 /* dynamic section */
|
||
#define SHT_NOTE 7 /* note section */
|
||
#define SHT_NOBITS 8 /* no space section */
|
||
#define SHT_REL 9 /* relation section without addends */
|
||
#define SHT_SHLIB 10 /* reserved - purpose unknown */
|
||
#define SHT_DYNSYM 11 /* dynamic symbol table section */
|
||
#define SHT_INIT_ARRAY 14 /* Array of constructors */
|
||
#define SHT_FINI_ARRAY 15 /* Array of destructors */
|
||
#define SHT_PREINIT_ARRAY 16 /* Array of pre-constructors */
|
||
#define SHT_GROUP 17 /* Section group */
|
||
#define SHT_SYMTAB_SHNDX 18 /* Extended section indeces */
|
||
#define SHT_NUM 19 /* number of section types */
|
||
#define SHT_LOOS 0x60000000 /* Start OS-specific */
|
||
#define SHT_HIOS 0x6fffffff /* End OS-specific */
|
||
#define SHT_LOPROC 0x70000000 /* reserved range for processor */
|
||
#define SHT_HIPROC 0x7fffffff /* specific section header types */
|
||
#define SHT_LOUSER 0x80000000 /* reserved range for application */
|
||
#define SHT_HIUSER 0xffffffff /* specific indexes */
|
||
|
||
/* Section names */
|
||
#define ELF_BSS ".bss" /* uninitialized data */
|
||
#define ELF_COMMENT ".comment" /* version control information */
|
||
#define ELF_DATA ".data" /* initialized data */
|
||
#define ELF_DATA1 ".data1" /* initialized data */
|
||
#define ELF_DEBUG ".debug" /* debug */
|
||
#define ELF_DYNAMIC ".dynamic" /* dynamic linking information */
|
||
#define ELF_DYNSTR ".dynstr" /* dynamic string table */
|
||
#define ELF_DYNSYM ".dynsym" /* dynamic symbol table */
|
||
#define ELF_FINI ".fini" /* termination code */
|
||
#define ELF_FINI_ARRAY ".fini_array" /* Array of destructors */
|
||
#define ELF_GOT ".got" /* global offset table */
|
||
#define ELF_HASH ".hash" /* symbol hash table */
|
||
#define ELF_INIT ".init" /* initialization code */
|
||
#define ELF_INIT_ARRAY ".init_array" /* Array of constuctors */
|
||
#define ELF_INTERP ".interp" /* Pathname of program interpreter */
|
||
#define ELF_LINE ".line" /* Symbolic line numnber information */
|
||
#define ELF_NOTE ".note" /* Contains note section */
|
||
#define ELF_PLT ".plt" /* Procedure linkage table */
|
||
#define ELF_PREINIT_ARRAY ".preinit_array" /* Array of pre-constructors */
|
||
#define ELF_REL_DATA ".rel.data" /* relocation data */
|
||
#define ELF_REL_FINI ".rel.fini" /* relocation termination code */
|
||
#define ELF_REL_INIT ".rel.init" /* relocation initialization code */
|
||
#define ELF_REL_DYN ".rel.dyn" /* relocaltion dynamic link info */
|
||
#define ELF_REL_RODATA ".rel.rodata" /* relocation read-only data */
|
||
#define ELF_REL_TEXT ".rel.text" /* relocation code */
|
||
#define ELF_RODATA ".rodata" /* read-only data */
|
||
#define ELF_RODATA1 ".rodata1" /* read-only data */
|
||
#define ELF_SHSTRTAB ".shstrtab" /* section header string table */
|
||
#define ELF_STRTAB ".strtab" /* string table */
|
||
#define ELF_SYMTAB ".symtab" /* symbol table */
|
||
#define ELF_SYMTAB_SHNDX ".symtab_shndx" /* symbol table section index */
|
||
#define ELF_TBSS ".tbss" /* thread local uninit data */
|
||
#define ELF_TDATA ".tdata" /* thread local init data */
|
||
#define ELF_TDATA1 ".tdata1" /* thread local init data */
|
||
#define ELF_TEXT ".text" /* code */
|
||
|
||
/* Section Attribute Flags - sh_flags */
|
||
#define SHF_WRITE 0x1 /* Writable */
|
||
#define SHF_ALLOC 0x2 /* occupies memory */
|
||
#define SHF_EXECINSTR 0x4 /* executable */
|
||
#define SHF_MERGE 0x10 /* Might be merged */
|
||
#define SHF_STRINGS 0x20 /* Contains NULL terminated strings */
|
||
#define SHF_INFO_LINK 0x40 /* sh_info contains SHT index */
|
||
#define SHF_LINK_ORDER 0x80 /* Preserve order after combining*/
|
||
#define SHF_OS_NONCONFORMING 0x100 /* Non-standard OS specific handling */
|
||
#define SHF_GROUP 0x200 /* Member of section group */
|
||
#define SHF_TLS 0x400 /* Thread local storage */
|
||
#define SHF_MASKOS 0x0ff00000 /* OS specific */
|
||
#define SHF_MASKPROC 0xf0000000 /* reserved bits for processor */
|
||
/* specific section attributes */
|
||
|
||
/* Section Group Flags */
|
||
#define GRP_COMDAT 0x1 /* COMDAT group */
|
||
#define GRP_MASKOS 0x0ff00000 /* Mask OS specific flags */
|
||
#define GRP_MASKPROC 0xf0000000 /* Mask processor specific flags */
|
||
|
||
/* Symbol table index */
|
||
#define STN_UNDEF 0 /* undefined */
|
||
|
||
/* Extract symbol info - st_info */
|
||
#define ELF32_ST_BIND(x) ((x) >> 4)
|
||
#define ELF32_ST_TYPE(x) (((unsigned int)x) & 0xf)
|
||
#define ELF32_ST_INFO(b, t) (((b) << 4) + ((t)&0xf))
|
||
#define ELF32_ST_VISIBILITY(x) ((x)&0x3)
|
||
|
||
/* Symbol Binding - ELF32_ST_BIND - st_info */
|
||
#define STB_LOCAL 0 /* Local symbol */
|
||
#define STB_GLOBAL 1 /* Global symbol */
|
||
#define STB_WEAK 2 /* like global - lower precedence */
|
||
#define STB_NUM 3 /* number of symbol bindings */
|
||
#define STB_LOOS 10 /* reserved range for operating */
|
||
#define STB_HIOS 12 /* system specific symbol bindings */
|
||
#define STB_LOPROC 13 /* reserved range for processor */
|
||
#define STB_HIPROC 15 /* specific symbol bindings */
|
||
|
||
/* Symbol type - ELF32_ST_TYPE - st_info */
|
||
#define STT_NOTYPE 0 /* not specified */
|
||
#define STT_OBJECT 1 /* data object */
|
||
#define STT_FUNC 2 /* function */
|
||
#define STT_SECTION 3 /* section */
|
||
#define STT_FILE 4 /* file */
|
||
#define STT_NUM 5 /* number of symbol types */
|
||
#define STT_TLS 6 /* Thread local storage symbol */
|
||
#define STT_LOOS 10 /* reserved range for operating */
|
||
#define STT_HIOS 12 /* system specific symbol types */
|
||
#define STT_LOPROC 13 /* reserved range for processor */
|
||
#define STT_HIPROC 15 /* specific symbol types */
|
||
|
||
/* Symbol visibility - ELF32_ST_VISIBILITY - st_other */
|
||
#define STV_DEFAULT 0 /* Normal visibility rules */
|
||
#define STV_INTERNAL 1 /* Processor specific hidden class */
|
||
#define STV_HIDDEN 2 /* Symbol unavailable in other mods */
|
||
#define STV_PROTECTED 3 /* Not preemptible, not exported */
|
||
|
||
/* Extract relocation info - r_info */
|
||
#define ELF32_R_SYM(i) ((i) >> 8)
|
||
#define ELF32_R_TYPE(i) ((unsigned char)(i))
|
||
#define ELF32_R_INFO(s, t) (((s) << 8) + (unsigned char)(t))
|
||
|
||
/* Segment types - p_type */
|
||
#define PT_NULL 0 /* unused */
|
||
#define PT_LOAD 1 /* loadable segment */
|
||
#define PT_DYNAMIC 2 /* dynamic linking section */
|
||
#define PT_INTERP 3 /* the RTLD */
|
||
#define PT_NOTE 4 /* auxiliary information */
|
||
#define PT_SHLIB 5 /* reserved - purpose undefined */
|
||
#define PT_PHDR 6 /* program header */
|
||
#define PT_TLS 7 /* Thread local storage template */
|
||
#define PT_NUM 8 /* Number of segment types */
|
||
#define PT_LOOS 0x60000000 /* reserved range for operating */
|
||
#define PT_HIOS 0x6fffffff /* system specific segment types */
|
||
#define PT_LOPROC 0x70000000 /* reserved range for processor */
|
||
#define PT_HIPROC 0x7fffffff /* specific segment types */
|
||
|
||
/* Segment flags - p_flags */
|
||
#define PF_X 0x1 /* Executable */
|
||
#define PF_W 0x2 /* Writable */
|
||
#define PF_R 0x4 /* Readable */
|
||
#define PF_MASKOS 0x0ff00000 /* OS specific segment flags */
|
||
#define PF_MASKPROC 0xf0000000 /* reserved bits for processor */
|
||
/* specific segment flags */
|
||
|
||
#define ELF64_R_SYM(i) ((i) >> 32)
|
||
#define ELF64_R_TYPE(i) ((i)&0xffffffff)
|
||
|
||
/* Dynamic Array Tags - d_tag */
|
||
#define DT_NULL 0 /* marks end of _DYNAMIC array */
|
||
#define DT_NEEDED 1 /* string table offset of needed lib */
|
||
#define DT_PLTRELSZ 2 /* size of relocation entries in PLT */
|
||
#define DT_PLTGOT 3 /* address PLT/GOT */
|
||
#define DT_HASH 4 /* address of symbol hash table */
|
||
#define DT_STRTAB 5 /* address of string table */
|
||
#define DT_SYMTAB 6 /* address of symbol table */
|
||
#define DT_RELA 7 /* address of relocation table */
|
||
#define DT_RELASZ 8 /* size of relocation table */
|
||
#define DT_RELAENT 9 /* size of relocation entry */
|
||
#define DT_STRSZ 10 /* size of string table */
|
||
#define DT_SYMENT 11 /* size of symbol table entry */
|
||
#define DT_INIT 12 /* address of initialization func */
|
||
#define DT_FINI 13 /* address of termination function */
|
||
#define DT_SONAME 14 /* string table offset of shared obj */
|
||
#define DT_RPATH 15 /* string table offset of library \
|
||
search path */
|
||
#define DT_SYMBOLIC 16 /* start sym search in shared obj */
|
||
#define DT_REL 17 /* address of rel. tbl. w addends */
|
||
#define DT_RELSZ 18 /* size of DT_REL relocation table */
|
||
#define DT_RELENT 19 /* size of DT_REL relocation entry */
|
||
#define DT_PLTREL 20 /* PLT referenced relocation entry */
|
||
#define DT_DEBUG 21 /* bugger */
|
||
#define DT_TEXTREL 22 /* Allow rel. mod. to unwritable seg */
|
||
#define DT_JMPREL 23 /* add. of PLT's relocation entries */
|
||
#define DT_BIND_NOW 24 /* Process relocations of object */
|
||
#define DT_INIT_ARRAY 25 /* Array with addresses of init fct */
|
||
#define DT_FINI_ARRAY 26 /* Array with addresses of fini fct */
|
||
#define DT_INIT_ARRAYSZ 27 /* Size in bytes of DT_INIT_ARRAY */
|
||
#define DT_FINI_ARRAYSZ 28 /* Size in bytes of DT_FINI_ARRAY */
|
||
#define DT_RUNPATH 29 /* Library search path */
|
||
#define DT_FLAGS 30 /* Flags for the object being loaded */
|
||
#define DT_ENCODING 32 /* Start of encoded range */
|
||
#define DT_PREINIT_ARRAY 32 /* Array with addresses of preinit fct*/
|
||
#define DT_PREINIT_ARRAYSZ 33 /* size in bytes of DT_PREINIT_ARRAY */
|
||
#define DT_NUM 34 /* Number used */
|
||
#define DT_LOOS 0x60000000 /* reserved range for OS */
|
||
#define DT_HIOS 0x6fffffff /* specific dynamic array tags */
|
||
#define DT_LOPROC 0x70000000 /* reserved range for processor */
|
||
#define DT_HIPROC 0x7fffffff /* specific dynamic array tags */
|
||
|
||
/* Dynamic Tag Flags - d_un.d_val */
|
||
#define DF_ORIGIN 0x01 /* Object may use DF_ORIGIN */
|
||
#define DF_SYMBOLIC 0x02 /* Symbol resolutions starts here */
|
||
#define DF_TEXTREL 0x04 /* Object contains text relocations */
|
||
#define DF_BIND_NOW 0x08 /* No lazy binding for this object */
|
||
#define DF_STATIC_TLS 0x10 /* Static thread local storage */
|
||
|
||
/* Standard ELF hashing function */
|
||
unsigned long elf_hash(const unsigned char *name);
|
||
|
||
#define ELF_TARG_VER 1 /* The ver for which this code is intended */
|
||
|
||
/* ELF register definitions */
|
||
#define R_386_NONE 0
|
||
#define R_386_32 1
|
||
#define R_386_PC32 2
|
||
#define R_386_GOT32 3
|
||
#define R_386_PLT32 4
|
||
#define R_386_COPY 5
|
||
#define R_386_GLOB_DAT 6
|
||
#define R_386_JMP_SLOT 7
|
||
#define R_386_RELATIVE 8
|
||
#define R_386_GOTOFF 9
|
||
#define R_386_GOTPC 10
|
||
#define R_386_NUM 11
|
||
|
||
/* x86-64 relocation types */
|
||
#define R_X86_64_NONE 0 /* No reloc */
|
||
#define R_X86_64_64 1 /* Direct 64 bit */
|
||
#define R_X86_64_PC32 2 /* PC relative 32 bit signed */
|
||
#define R_X86_64_GOT32 3 /* 32 bit GOT entry */
|
||
#define R_X86_64_PLT32 4 /* 32 bit PLT address */
|
||
#define R_X86_64_COPY 5 /* Copy symbol at runtime */
|
||
#define R_X86_64_GLOB_DAT 6 /* Create GOT entry */
|
||
#define R_X86_64_JUMP_SLOT 7 /* Create PLT entry */
|
||
#define R_X86_64_RELATIVE 8 /* Adjust by program base */
|
||
/* 32 bit signed pc relative offset to GOT */
|
||
#define R_X86_64_GOTPCREL 9
|
||
#define R_X86_64_32 10 /* Direct 32 bit zero extended */
|
||
#define R_X86_64_32S 11 /* Direct 32 bit sign extended */
|
||
#define R_X86_64_16 12 /* Direct 16 bit zero extended */
|
||
#define R_X86_64_PC16 13 /* 16 bit sign extended pc relative */
|
||
#define R_X86_64_8 14 /* Direct 8 bit sign extended */
|
||
#define R_X86_64_PC8 15 /* 8 bit sign extended pc relative */
|
||
|
||
#define R_X86_64_NUM 16
|
||
|
||
/*
|
||
* XXX - PowerPC defines really don't belong in here,
|
||
* but we'll put them in for simplicity.
|
||
*/
|
||
|
||
/* Values for Elf32/64_Ehdr.e_flags */
|
||
#define EF_PPC_EMB 0x80000000 /* PowerPC embedded flag */
|
||
|
||
#define EF_PPC64_ELFV1_ABI 0x00000001
|
||
#define EF_PPC64_ELFV2_ABI 0x00000002
|
||
|
||
/* Cygnus local bits below */
|
||
#define EF_PPC_RELOCATABLE 0x00010000 /* PowerPC -mrelocatable flag*/
|
||
#define EF_PPC_RELOCATABLE_LIB 0x00008000 /* PowerPC -mrelocatable-lib \
|
||
flag */
|
||
|
||
/* PowerPC relocations defined by the ABIs */
|
||
#define R_PPC_NONE 0
|
||
#define R_PPC_ADDR32 1 /* 32bit absolute address */
|
||
#define R_PPC_ADDR24 2 /* 26bit address, 2 bits ignored */
|
||
#define R_PPC_ADDR16 3 /* 16bit absolute address */
|
||
#define R_PPC_ADDR16_LO 4 /* lower 16bit of absolute address */
|
||
#define R_PPC_ADDR16_HI 5 /* high 16bit of absolute address */
|
||
#define R_PPC_ADDR16_HA 6 /* adjusted high 16bit */
|
||
#define R_PPC_ADDR14 7 /* 16bit address, 2 bits ignored */
|
||
#define R_PPC_ADDR14_BRTAKEN 8
|
||
#define R_PPC_ADDR14_BRNTAKEN 9
|
||
#define R_PPC_REL24 10 /* PC relative 26 bit */
|
||
#define R_PPC_REL14 11 /* PC relative 16 bit */
|
||
#define R_PPC_REL14_BRTAKEN 12
|
||
#define R_PPC_REL14_BRNTAKEN 13
|
||
#define R_PPC_GOT16 14
|
||
#define R_PPC_GOT16_LO 15
|
||
#define R_PPC_GOT16_HI 16
|
||
#define R_PPC_GOT16_HA 17
|
||
#define R_PPC_PLTREL24 18
|
||
#define R_PPC_COPY 19
|
||
#define R_PPC_GLOB_DAT 20
|
||
#define R_PPC_JMP_SLOT 21
|
||
#define R_PPC_RELATIVE 22
|
||
#define R_PPC_LOCAL24PC 23
|
||
#define R_PPC_UADDR32 24
|
||
#define R_PPC_UADDR16 25
|
||
#define R_PPC_REL32 26
|
||
#define R_PPC_PLT32 27
|
||
#define R_PPC_PLTREL32 28
|
||
#define R_PPC_PLT16_LO 29
|
||
#define R_PPC_PLT16_HI 30
|
||
#define R_PPC_PLT16_HA 31
|
||
#define R_PPC_SDAREL16 32
|
||
#define R_PPC_SECTOFF 33
|
||
#define R_PPC_SECTOFF_LO 34
|
||
#define R_PPC_SECTOFF_HI 35
|
||
#define R_PPC_SECTOFF_HA 36
|
||
/* Keep this the last entry */
|
||
#define R_PPC_NUM 37
|
||
|
||
/*
|
||
* The remaining relocs are from the Embedded ELF ABI, and are not
|
||
* in the SVR4 ELF ABI.
|
||
*/
|
||
#define R_PPC_EMB_NADDR32 101
|
||
#define R_PPC_EMB_NADDR16 102
|
||
#define R_PPC_EMB_NADDR16_LO 103
|
||
#define R_PPC_EMB_NADDR16_HI 104
|
||
#define R_PPC_EMB_NADDR16_HA 105
|
||
#define R_PPC_EMB_SDAI16 106
|
||
#define R_PPC_EMB_SDA2I16 107
|
||
#define R_PPC_EMB_SDA2REL 108
|
||
#define R_PPC_EMB_SDA21 109 /* 16 bit offset in SDA */
|
||
#define R_PPC_EMB_MRKREF 110
|
||
#define R_PPC_EMB_RELSEC16 111
|
||
#define R_PPC_EMB_RELST_LO 112
|
||
#define R_PPC_EMB_RELST_HI 113
|
||
#define R_PPC_EMB_RELST_HA 114
|
||
#define R_PPC_EMB_BIT_FLD 115
|
||
#define R_PPC_EMB_RELSDA 116 /* 16 bit relative offset in SDA */
|
||
|
||
/* Diab tool relocations */
|
||
#define R_PPC_DIAB_SDA21_LO 180 /* like EMB_SDA21, but lower 16 bit */
|
||
#define R_PPC_DIAB_SDA21_HI 181 /* like EMB_SDA21, but high 16 bit */
|
||
#define R_PPC_DIAB_SDA21_HA 182 /* like EMB_SDA21, adjusted high 16 */
|
||
#define R_PPC_DIAB_RELSDA_LO 183 /* like EMB_RELSDA, but lower 16 bit */
|
||
#define R_PPC_DIAB_RELSDA_HI 184 /* like EMB_RELSDA, but high 16 bit */
|
||
#define R_PPC_DIAB_RELSDA_HA 185 /* like EMB_RELSDA, adjusted high 16 */
|
||
|
||
/*
|
||
* This is a phony reloc to handle any old fashioned TOC16 references
|
||
* that may still be in object files.
|
||
*/
|
||
#define R_PPC_TOC16 255
|
||
|
||
/* ARM relocs */
|
||
#define R_ARM_NONE 0 /* No reloc */
|
||
#define R_ARM_RELATIVE 23 /* Adjust by program base */
|
||
|
||
/* AArch64 relocs */
|
||
#define R_AARCH64_NONE 0 /* No relocation */
|
||
#define R_AARCH64_RELATIVE 1027 /* Adjust by program base */
|
||
|
||
/* RISC-V relocations */
|
||
#define R_RISCV_32 1
|
||
#define R_RISCV_64 2
|
||
#define R_RISCV_RELATIVE 3
|
||
|
||
/*
|
||
* A very simple ELF64 loader, assumes the image is valid, returns the
|
||
* entry point address.
|
||
*
|
||
* Note if U-Boot is 32-bit, the loader assumes the to segment's
|
||
* physical address and size is within the lower 32-bit address space.
|
||
*/
|
||
static unsigned long ElfLoadElf64ImagePhdr(unsigned long addr)
|
||
{
|
||
Elf64_Ehdr *ehdr; /* Elf header structure pointer */
|
||
Elf64_Phdr *phdr; /* Program header structure pointer */
|
||
|
||
int i;
|
||
|
||
ehdr = (Elf64_Ehdr *)addr;
|
||
phdr = (Elf64_Phdr *)(addr + (unsigned long)ehdr->e_phoff);
|
||
|
||
/* Load each program header */
|
||
for (i = 0; i < ehdr->e_phnum; ++i)
|
||
{
|
||
void *dst = (void *)(unsigned long)phdr->p_paddr;
|
||
void *src = (void *)addr + phdr->p_offset;
|
||
|
||
f_printk("Loading phdr %i to %p (%lu bytes) \r\n",
|
||
i, dst, (unsigned long)phdr->p_filesz);
|
||
if (phdr->p_filesz)
|
||
{
|
||
memcpy(dst, src, phdr->p_filesz);
|
||
}
|
||
|
||
if (phdr->p_filesz != phdr->p_memsz)
|
||
{
|
||
memset(dst + phdr->p_filesz, 0x00,
|
||
phdr->p_memsz - phdr->p_filesz);
|
||
}
|
||
|
||
FCacheDCacheFlushRange((uintptr)dst, phdr->p_memsz);
|
||
++phdr;
|
||
}
|
||
|
||
if (ehdr->e_machine == EM_PPC64 && (ehdr->e_flags & EF_PPC64_ELFV1_ABI))
|
||
{
|
||
/*
|
||
* For the 64-bit PowerPC ELF V1 ABI, e_entry is a function
|
||
* descriptor pointer with the first double word being the
|
||
* address of the entry point of the function.
|
||
*/
|
||
uintptr_t addr = ehdr->e_entry;
|
||
|
||
return *(Elf64_Addr *)addr;
|
||
}
|
||
|
||
return ehdr->e_entry;
|
||
}
|
||
|
||
|
||
|
||
static unsigned long ElfLoadElf64ImageShdr(unsigned long addr)
|
||
{
|
||
Elf64_Ehdr *ehdr; /* Elf header structure pointer */
|
||
Elf64_Shdr *shdr; /* Section header structure pointer */
|
||
unsigned char *strtab = 0; /* String table pointer */
|
||
unsigned char *image; /* Binary image pointer */
|
||
int i; /* Loop counter */
|
||
|
||
ehdr = (Elf64_Ehdr *)addr;
|
||
|
||
/* Find the section header string table for output info */
|
||
shdr = (Elf64_Shdr *)(addr + (unsigned long)ehdr->e_shoff +
|
||
(ehdr->e_shstrndx * sizeof(Elf64_Shdr)));
|
||
|
||
if (shdr->sh_type == SHT_STRTAB)
|
||
{
|
||
strtab = (unsigned char *)(addr + (unsigned long)shdr->sh_offset);
|
||
}
|
||
|
||
/* Load each appropriate section */
|
||
for (i = 0; i < ehdr->e_shnum; ++i)
|
||
{
|
||
shdr = (Elf64_Shdr *)(addr + (unsigned long)ehdr->e_shoff +
|
||
(i * sizeof(Elf64_Shdr)));
|
||
|
||
if (!(shdr->sh_flags & SHF_ALLOC) ||
|
||
shdr->sh_addr == 0 || shdr->sh_size == 0)
|
||
{
|
||
continue;
|
||
}
|
||
|
||
if (strtab)
|
||
{
|
||
f_printk("%sing %s @ 0x%08lx (%ld bytes) \r\n",
|
||
(shdr->sh_type == SHT_NOBITS) ? "Clear" : "Load",
|
||
&strtab[shdr->sh_name],
|
||
(unsigned long)shdr->sh_addr,
|
||
(long)shdr->sh_size);
|
||
}
|
||
|
||
if (shdr->sh_type == SHT_NOBITS)
|
||
{
|
||
memset((void *)(uintptr)shdr->sh_addr, 0,
|
||
shdr->sh_size);
|
||
}
|
||
else
|
||
{
|
||
image = (unsigned char *)addr + (unsigned long)shdr->sh_offset;
|
||
memcpy((void *)(uintptr)shdr->sh_addr,
|
||
(const void *)image, shdr->sh_size);
|
||
}
|
||
FCacheDCacheFlushRange((uintptr)shdr->sh_addr, shdr->sh_size);
|
||
}
|
||
|
||
if (ehdr->e_machine == EM_PPC64 && (ehdr->e_flags &
|
||
EF_PPC64_ELFV1_ABI))
|
||
{
|
||
/*
|
||
* For the 64-bit PowerPC ELF V1 ABI, e_entry is a function
|
||
* descriptor pointer with the first double word being the
|
||
* address of the entry point of the function.
|
||
*/
|
||
uintptr addr = ehdr->e_entry;
|
||
|
||
return *(Elf64_Addr *)addr;
|
||
}
|
||
|
||
return ehdr->e_entry;
|
||
}
|
||
|
||
unsigned long ElfLoadElfImagePhdr(unsigned long addr)
|
||
{
|
||
Elf32_Ehdr *ehdr; /* Elf header structure pointer */
|
||
Elf32_Phdr *phdr; /* Program header structure pointer */
|
||
int i;
|
||
|
||
ehdr = (Elf32_Ehdr *)addr;
|
||
if (ehdr->e_ident[EI_CLASS] == ELFCLASS64)
|
||
{
|
||
return ElfLoadElf64ImagePhdr(addr);
|
||
}
|
||
|
||
phdr = (Elf32_Phdr *)(addr + ehdr->e_phoff);
|
||
|
||
/* Load each program header */
|
||
for (i = 0; i < ehdr->e_phnum; ++i)
|
||
{
|
||
void *dst = (void *)(uintptr)phdr->p_paddr;
|
||
void *src = (void *)addr + phdr->p_offset;
|
||
|
||
f_printk("Loading phdr %i to %p (%i bytes)",
|
||
i, dst, phdr->p_filesz);
|
||
if (phdr->p_filesz)
|
||
{
|
||
memcpy(dst, src, phdr->p_filesz);
|
||
}
|
||
if (phdr->p_filesz != phdr->p_memsz)
|
||
{
|
||
memset(dst + phdr->p_filesz, 0x00,
|
||
phdr->p_memsz - phdr->p_filesz);
|
||
}
|
||
|
||
FCacheDCacheFlushRange((uintptr)dst, phdr->p_memsz);
|
||
++phdr;
|
||
}
|
||
|
||
return ehdr->e_entry;
|
||
}
|
||
|
||
unsigned long ElfLoadElfImageShdr(unsigned long addr)
|
||
{
|
||
Elf32_Ehdr *ehdr; /* Elf header structure pointer */
|
||
Elf32_Shdr *shdr; /* Section header structure pointer */
|
||
unsigned char *strtab = 0; /* String table pointer */
|
||
unsigned char *image; /* Binary image pointer */
|
||
int i; /* Loop counter */
|
||
|
||
ehdr = (Elf32_Ehdr *)addr;
|
||
if (ehdr->e_ident[EI_CLASS] == ELFCLASS64)
|
||
{
|
||
return ElfLoadElf64ImageShdr(addr);
|
||
}
|
||
|
||
/* Find the section header string table for output info */
|
||
shdr = (Elf32_Shdr *)(addr + ehdr->e_shoff +
|
||
(ehdr->e_shstrndx * sizeof(Elf32_Shdr)));
|
||
|
||
if (shdr->sh_type == SHT_STRTAB)
|
||
{
|
||
strtab = (unsigned char *)(addr + shdr->sh_offset);
|
||
}
|
||
|
||
/* Load each appropriate section */
|
||
for (i = 0; i < ehdr->e_shnum; ++i)
|
||
{
|
||
shdr = (Elf32_Shdr *)(addr + ehdr->e_shoff +
|
||
(i * sizeof(Elf32_Shdr)));
|
||
|
||
if (!(shdr->sh_flags & SHF_ALLOC) ||
|
||
shdr->sh_addr == 0 || shdr->sh_size == 0)
|
||
{
|
||
continue;
|
||
}
|
||
|
||
if (strtab)
|
||
{
|
||
f_printk("%sing %s @ 0x%08lx (%ld bytes)",
|
||
(shdr->sh_type == SHT_NOBITS) ? "Clear" : "Load",
|
||
&strtab[shdr->sh_name],
|
||
(unsigned long)shdr->sh_addr,
|
||
(long)shdr->sh_size);
|
||
}
|
||
|
||
if (shdr->sh_type == SHT_NOBITS)
|
||
{
|
||
memset((void *)(uintptr)shdr->sh_addr, 0,
|
||
shdr->sh_size);
|
||
}
|
||
else
|
||
{
|
||
image = (unsigned char *)addr + shdr->sh_offset;
|
||
memcpy((void *)(uintptr)shdr->sh_addr,
|
||
(const void *)image, shdr->sh_size);
|
||
}
|
||
|
||
FCacheDCacheFlushRange((uintptr)shdr->sh_addr, shdr->sh_size);
|
||
}
|
||
|
||
return ehdr->e_entry;
|
||
}
|
||
|
||
/*
|
||
* Determine if a valid ELF image exists at the given memory location.
|
||
* First look at the ELF header magic field, then make sure that it is
|
||
* executable.
|
||
*/
|
||
int ElfIsImageValid(unsigned long addr)
|
||
{
|
||
Elf32_Ehdr *ehdr; /* Elf header structure pointer */
|
||
|
||
ehdr = (Elf32_Ehdr *)addr;
|
||
|
||
if (!IS_ELF(*ehdr))
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
if (ehdr->e_type != ET_EXEC)
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
return 1;
|
||
}
|
||
|
||
/* Allow ports to override the default behavior */
|
||
unsigned long ElfExecBootElf(unsigned long (*entry)(int, char *const[]),
|
||
int argc, char *const argv[])
|
||
{
|
||
unsigned long ret;
|
||
|
||
/*
|
||
* pass address parameter as argv[0] (aka command name),
|
||
* and all remaining args
|
||
*/
|
||
ret = entry(argc, argv);
|
||
|
||
return ret;
|
||
}
|
||
|
||
|
||
|
||
|
||
/**
|
||
* @name: Elf64GetTargetSection
|
||
* @msg: 从ELF文件中获取指定名称的section的数据
|
||
* @return: FError，表示函数执行结果的错误码
|
||
* @note:
|
||
* @param {Elf64_Ehdr} *ehdr，指向ELF文件头的指针
|
||
* @param {char} *section_name，指定的section名称
|
||
* @param {u8} *data_get，用于存储获取到的section数据的缓冲区指针
|
||
* @param {u32} *length_p，用于存储获取到的section数据长度的指针
|
||
*/
|
||
static FError Elf64GetTargetSection(unsigned long addr,char *section_name ,u8 *data_get,u32 *length_p)
|
||
{
|
||
Elf64_Ehdr *ehdr; /* Elf header structure pointer */
|
||
Elf64_Shdr *shdr; /* Section header structure pointer */
|
||
unsigned char *strtab = 0; /* String table pointer */
|
||
unsigned char *image; /* Binary image pointer */
|
||
int i; /* Loop counter */
|
||
|
||
ehdr = (Elf64_Ehdr *)addr;
|
||
/* Find the section header string table for output info */
|
||
shdr = (Elf64_Shdr *)(addr + (unsigned long)ehdr->e_shoff +
|
||
(ehdr->e_shstrndx * sizeof(Elf64_Shdr)));
|
||
|
||
if (shdr->sh_type == SHT_STRTAB)
|
||
{
|
||
strtab = (unsigned char *)(addr + (unsigned long)shdr->sh_offset);
|
||
}
|
||
else
|
||
{
|
||
f_printk("There is no string table \r\n");
|
||
return FELF_SECTION_NO_STRTAB;
|
||
}
|
||
|
||
/* Load each appropriate section */
|
||
for (i = 0; i < ehdr->e_shnum; ++i)
|
||
{
|
||
shdr = (Elf64_Shdr *)(addr + (unsigned long)ehdr->e_shoff +
|
||
(i * sizeof(Elf64_Shdr)));
|
||
|
||
if (!(shdr->sh_flags & SHF_ALLOC) ||
|
||
shdr->sh_addr == 0 || shdr->sh_size == 0)
|
||
{
|
||
continue;
|
||
}
|
||
|
||
if(strcmp(section_name, &strtab[shdr->sh_name]) == 0)
|
||
{
|
||
f_printk("%sing %s @ 0x%08lx (%ld bytes) \r\n",
|
||
(shdr->sh_type == SHT_NOBITS) ? "Clear" : "Load",
|
||
&strtab[shdr->sh_name],
|
||
(unsigned long)shdr->sh_addr,
|
||
(long)shdr->sh_size);
|
||
|
||
if(shdr->sh_type == SHT_NOBITS)
|
||
{
|
||
f_printk("There is no space section \r\n");
|
||
return FELF_SECTION_NO_SPACE;
|
||
}
|
||
printf("*length_p is %d \r\n",*length_p);
|
||
if (shdr->sh_size < *length_p)
|
||
{
|
||
*length_p = shdr->sh_size;
|
||
}
|
||
|
||
image = (unsigned char *)addr + (unsigned long)shdr->sh_offset;
|
||
memcpy((void *)(uintptr)data_get,
|
||
(const void *)image, *length_p);
|
||
|
||
return FELF_SUCCESS;
|
||
}
|
||
|
||
}
|
||
|
||
f_printk("%s: No %s section exists in this elf file \r\n",__func__,section_name);
|
||
return FELF_SECTION_NOT_FIT;
|
||
}
|
||
|
||
|
||
|
||
/**
|
||
* @name:
|
||
* @msg:
|
||
* @return {*}
|
||
* @note:
|
||
* @param {Elf32_Shdr} *ehdr
|
||
* @param {char} *section_name
|
||
* @param {u8} *data_get
|
||
* @param {u32} *length_p
|
||
*/
|
||
static FError Elf32GetTargetSection(unsigned long addr,char *section_name ,u8 *data_get,u32 *length_p)
|
||
{
|
||
|
||
Elf32_Ehdr *ehdr; /* Elf header structure pointer */
|
||
Elf32_Shdr *shdr; /* Section header structure pointer */
|
||
unsigned char *strtab = 0; /* String table pointer */
|
||
unsigned char *image; /* Binary image pointer */
|
||
int i; /* Loop counter */
|
||
|
||
ehdr = (Elf32_Ehdr *)addr;
|
||
/* Find the section header string table for output info */
|
||
shdr = (Elf32_Shdr *)(addr + ehdr->e_shoff +
|
||
(ehdr->e_shstrndx * sizeof(Elf32_Shdr)));
|
||
|
||
if (shdr->sh_type == SHT_STRTAB)
|
||
{
|
||
strtab = (unsigned char *)(addr + shdr->sh_offset);
|
||
}
|
||
else
|
||
{
|
||
f_printk("There is no string table \r\n");
|
||
return FELF_SECTION_NO_STRTAB;
|
||
}
|
||
|
||
/* Load each appropriate section */
|
||
for (i = 0; i < ehdr->e_shnum; ++i)
|
||
{
|
||
shdr = (Elf32_Shdr *)(addr + ehdr->e_shoff +
|
||
(i * sizeof(Elf32_Shdr)));
|
||
|
||
if (!(shdr->sh_flags & SHF_ALLOC) ||
|
||
shdr->sh_addr == 0 || shdr->sh_size == 0)
|
||
{
|
||
continue;
|
||
}
|
||
|
||
if (strcmp(section_name, &strtab[shdr->sh_name]) == 0)
|
||
{
|
||
printf("%sing %s @ 0x%08lx (%ld bytes)",
|
||
(shdr->sh_type == SHT_NOBITS) ? "Clear" : "Load",
|
||
&strtab[shdr->sh_name],
|
||
(unsigned long)shdr->sh_addr,
|
||
(long)shdr->sh_size);
|
||
|
||
printf("copy num is \r\n");
|
||
printf("*length_p is %d \r\n",*length_p);
|
||
if(shdr->sh_size < *length_p)
|
||
{
|
||
*length_p = shdr->sh_size;
|
||
}
|
||
|
||
|
||
image = (unsigned char *)addr + (unsigned long)shdr->sh_offset;
|
||
memcpy((void *)(uintptr)data_get,
|
||
(const void *)image, *length_p);
|
||
|
||
return FELF_SUCCESS;
|
||
|
||
}
|
||
}
|
||
|
||
f_printk("%s: No %s section exists in this elf file \r\n",__func__,section_name);
|
||
return FELF_SECTION_NOT_FIT;
|
||
}
|
||
|
||
|
||
|
||
|
||
/**
|
||
* @name: ElfGetSection
|
||
* @msg: 获取 ELF 文件中指定节的内容
|
||
* @return {FError} 返回错误码，表示获取节内容的结果
|
||
* @note: 函数将根据 ELF 文件的类型（32位或64位）调用相应的函数来获取指定节的内容。
|
||
* @param {unsigned long} addr ELF 文件的基地址
|
||
* @param {char*} section_name 节的名称
|
||
* @param {u8*} data_get 用于存储节内容的缓冲区
|
||
* @param {u32*} length_p 存储获取到的节内容的长度
|
||
*/
|
||
FError ElfGetSection(unsigned long addr, char *section_name, u8 *data_get, u32 *length_p)
|
||
{
|
||
Elf32_Ehdr *ehdr; /* ELF 文件头指针 */
|
||
Elf32_Shdr *shdr; /* 节头指针 */
|
||
unsigned char *strtab = 0; /* 字符串表指针 */
|
||
unsigned char *image; /* 二进制映像指针 */
|
||
int i; /* 循环计数器 */
|
||
|
||
/* 检查 ELF 文件的类型 */
|
||
ehdr = (Elf32_Ehdr *)addr;
|
||
if (ehdr->e_ident[EI_CLASS] == ELFCLASS64)
|
||
{
|
||
/* 如果是64位 ELF，则调用 Elf64GetTargetSection 函数获取指定节的内容 */
|
||
return Elf64GetTargetSection(addr, section_name, data_get, length_p);
|
||
}
|
||
|
||
/* 如果是32位 ELF，则调用 Elf32GetTargetSection 函数获取指定节的内容 */
|
||
if (ehdr->e_ident[EI_CLASS] == ELFCLASS32)
|
||
{
|
||
return Elf32GetTargetSection(addr, section_name, data_get, length_p);
|
||
}
|
||
|
||
/* 若未匹配到有效的 ELF 类型，则返回 FELF_SECTION_GET_ERROR 错误码 */
|
||
return FELF_SECTION_GET_ERROR;
|
||
}
|
||
|